newMap = existingMap
		plugins, err := util.GetPlugins(newMap)
		if err != nil {
			return nil, fmt.Errorf("existing CNI config: %v", err)
		}

		for i, rawPlugin := range plugins {
			plugin, err := util.GetPlugin(rawPlugin)
			if err != nil {
				return nil, fmt.Errorf("existing CNI plugin: %v", err)
			}
			if plugin["type"] == "istio-cni" {
				plugins = append(plugins[:i], plugins[i+1:]...)
				break